Alumina Porcelain for Electrical Engineering and Procedure of Its Manufacture
| Publication Number: | SI22541A |
| Application Date: | 12. 6. 2007 |
| Assignee/Applicant: | ETI Elektroelement d. d. [SI], Jožef Stefan Institute [SI] |
| Inventor: | Marjan Buh, Janez Holc, Vlasta Imperl, Martina Oberžan |
| Title: | Glinični porcelan za elektrotehniko in postopek njegove izdelave [SL], Alumina Porcelain for Electrical Engineering and Procedure of Its Manufacture [EN] |
| Description: | The subject of invention is alumina porcelain for electrical engineering and the procedure for its manufacture. Technical porcelain according to the invention belongs to the group of high mechanical strength alkaline alumo-silicate porcelains. The alumina porcelain according to the invention has the following chemical composition (mass %): from 58 to 62 % aluminium oxide, from 0,3 to 0,6 % iron oxide, from 0,1 to 0,3 % sodium oxide, from 1,5 to 2,5 % potassium oxide and from 0,8 to 1,2 % lithium oxide. The total content of iron oxide is lower than 0,5 %. Ceramic material is fired in the temperature range from 1280 to 1320 degrees Celsius for 1 to 4 fours. Ceramic material with the said composition and prepared according to the procedure described exhibits a higher flexural strength than 200 MPa. Surface glazed ceramic material prepared according to the procedure described exhibits a higher flexural strength than 240 MPa. |
| Drawings: | / |
| Category: | Nanotechnology and New Materials |
| Technology application codes: | Industrial manufacturing, material and transport |
| Market application codes: | Industrial products |
| www: | https://worldwide.espacenet.com/patent/search/family/040184803/publication/SI22541A?q=si22541 |
| Patent offices: | UIL RS |